In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This science fair project idea provides evidence that air is everywhere and takes up space.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project idea produces sounds by creating vibrations using different objects.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

This science fair project idea produces varying pitches of sound.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

In this science fair project, students make their own rain gauge to measure rainfall.

The goal of this project is to create an exciting topographical map out of dough.

Find out whether putting something on top of a plant will inhibit its growth.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

In this fun activity, your child will create their very own solar oven to bake s'mores!